Basic Marketing Research 7th Edition by Gilbert Churchill,Tom Brown,Tracy Suter

Exercise 4

The president of a chain of department stores had promised the managers of the various stores a bonus of 8% if the average monthly sales per store increased $300,000 or more. A random sample of 12 stores yielded die following sales increases: The president of a chain of department stores had promised the managers of the various stores a bonus of 8% if the average monthly sales per store increased $300,000 or more. A random sample of 12 stores yielded die following sales increases:

The president is wondering whether this random sample of stores indicates that the population of stores has reached the goal.
a. State the null and alternate hypotheses.
b. Is the sample size considered small or large
c. Which test should be used Why
d. Would you reject the null hypothesis at the 5% level of significance Support your conclusion with the necessary calculations.
Use the AFC member survey (Figure 18.1), codebook (Figure 18.3), and data to perform the analyses in problems 11 through 15. The data are available raw form (AFC.txt") or as SPSS data file ("AFC") at www.cengage.com/marketing/churchill.